Linking America, India and Nazi Germany, Wilkerson reveals how our world has been shaped by casteand how its rigid, arbitrary hierarchies still divide us today Download PDF. Book Description: The Pulitzer Prize–winning, bestselling author of The Warmth of Other Suns examines the unspoken caste system that has shaped America and shows how our lives today are still defined by a hierarchy of human divisions •. Ibrahim Sundiata. Linking the caste systems of America, India, and Nazi Germany, Wilkerso